hmz007
36ed224bac
Signed-off-by: hmz007 <hmz007@gmail.com> Change-Id: Ib87fdbe7a0be7dc961af3500fe9ea4589a127f9f
19 lines
472 B
C
19 lines
472 B
C
/* SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause) */
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#ifndef _TOOLS_LINUX_RING_BUFFER_H_
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#define _TOOLS_LINUX_RING_BUFFER_H_
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#include <linux/compiler.h>
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static inline __u64 ring_buffer_read_head(struct perf_event_mmap_page *base)
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{
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return smp_load_acquire(&base->data_head);
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}
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static inline void ring_buffer_write_tail(struct perf_event_mmap_page *base,
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__u64 tail)
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{
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smp_store_release(&base->data_tail, tail);
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}
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#endif /* _TOOLS_LINUX_RING_BUFFER_H_ */
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